The most appropiate Webserver Permission on ubuntu 16.04

I set up a server with Ubuntu 16.04, LAMP stack and wordpress. I have my server configured and setup on a VPS, running Ubuntu 16.04. When I first installed wordpress I couldn’t install any plugins at first, so I had permission setup like this:

sudo chown -R sammy:www-data /var/www/html sudo find /var/www/html -type d -exec chmod g+s {} ; sudo chmod g+w /var/www/html/wp-content sudo chmod -R g+w /var/www/html/wp-content/themes sudo chmod -R g+w /var/www/html/wp-content/plugins sudo chown -R www-data /var/www/html

After I did all of this I was able to install plugins but

  1. I have not been able to submit forms - error message: There was an error trying to send your message. Please try again later.

  2. The website constantly lost connection with error message: error connnecting to database

What will be the most appropriate permission and privilege to give to the Webserver to perform any future task that is needed


Submit an answer
You can type!ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!